Alternativer Identifier:
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Verwandter Identifier:
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Ersteller/in:
Fu, Qiang [Energiespeichersysteme]

Guo, Bingrui [Energiespeichersysteme]

Hua, Weibo [Energiespeichersysteme]

Sarapulova, Angelina [Energiespeichersysteme]

Zhu, Lihua [Energiespeichersysteme]

Weidler, Peter G. [Institut für Funktionelle Grenzflächen]

Missyul, Alexander [Missyul, Alexander]

Knapp, Michael https://orcid.org/0000-0003-0091-8463 [Energiespeichersysteme]

Ehrenberg, Helmut [Energiespeichersysteme]

Dsoke, Sonia https://orcid.org/0000-0001-9295-2110 [Energiespeichersysteme]
Beitragende:
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Titel:
Electrochemical Investigation of Calcium Substituted Monoclinic Li3V2(PO4)3 Negative Electrode Materials for Sodium- and Potassium-Ion Batteries
Weitere Titel:
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Beschreibung:
(Abstract) Herein, the electrochemical properties and reaction mechanism of Li3-2xCaxV2(PO4)3/C (x = 0, 0.5, 1, and 1.5) as negative electrode materials for sodium-ion/potassium-ion batteries (SIBs/PIBs) are investigated. All samples undergo a mixed contribution of diffusion-controlled and pseudocapacitive-type processes in SIBs and PIBs via Trasatti Differentiation Method, while the latter increases with Ca content increase. Among them, Li3V2(PO4)3/C exhibits the highest reversible capacity in SIBs and PIBs, while Ca1.5V2(PO4)3/C shows the best rate performance with a capacity retention of 46% at 20 C in SIBs and 47% at 10 C in PIBs. This study demonstrates that the specific capacity of this type of material in SIBs and PIBs does not increase with the Ca-content as previously observed in lithium-ion system, but the stability and performance at a high C-rate can be improved by replacing Li+ with Ca2+. This indicates that insertion of different monovalent cations (Na+/K+) can strongly influence the redox reaction and structure evolution of the host materials, due to the larger ion size of Na+ and K+ and their different kinetic properties with respect to Li+. Furthermore, the working mechanism of both LVP/C and Ca1.5V2(PO4)3/C in SIBs are elucidated via in operando synchrotron diffraction and in operando X-ray absorption spectroscopy.
(Technical Remarks) Datasets and proceeded data
Schlagworte:
Monoclinic Li3V2(PO4)3
Negative electrode materials
Electrochemical performance
Sodium-ion batteries
Potassium-ion batteries
Zugehörige Informationen:
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Sprache:
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Erstellungsjahr:
Fachgebiet:
Engineering
Objekttyp:
Dataset
Datenquelle:
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Verwendete Software:
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Datenverarbeitung:
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Erscheinungsjahr:
Rechteinhaber/in:
Fu, Qiang

Guo, Bingrui

Hua, Weibo

Sarapulova, Angelina

Zhu, Lihua

Weidler, Peter G.

Missyul, Alexander

Ehrenberg, Helmut
Förderung:
-
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Status:
Publiziert
Eingestellt von:
kitopen
Erstellt am:
Archivierungsdatum:
2023-06-30
Archivgröße:
636,1 MB
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kitopen
Archiv-Prüfsumme:
7f2f86bb756cd270109d9656ec1d0663 (MD5)
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2023-07-13